loader: gh1014- Fix physical device dispatch table
loader: gh1014- Fix physical device dispatch table

Instead of initializing dispatch tabled for up to *pPhysicalDeviceCount devices, initialize
always all dispatch tables.

This fixes corruption _after_ VulkanCTS dEQP-VK.api.info.instance.physical_devices test.

Change-Id: I29ff42456bed9acb6d2c4016fe7f1940b7f4bd3b

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools